Atomic-scale dissipation processes in dynamic force spectroscopy

Kawai, Shigeki and Canova, Filippo Federici and Glatzel, Thilo and Foster, Adam S. and Meyer, Ernst. (2011) Atomic-scale dissipation processes in dynamic force spectroscopy. Physical Review B, Vol. 84, H. 11 , 115415.

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Official URL: http://edoc.unibas.ch/dok/A6001647

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A systematic distance-dependent measurement of the quasistatic tip-sample interactions reveals a hidden stochastic dissipative interaction of the atomic-scale contact in dynamic force microscopy. By comparison of experiment with detailed molecular dynamics simulations, we demonstrate that the infrequently observed hysteresis loops are attributed to the formation of atomic chains during tip retraction. These lead to a large magnitude of energy dissipation in a single cycle and dominate the average measured dissipation, while also leading to differences in the forces measured in static and dynamic force microscopy. This paper provides quantitative force measurements and insights into atomic-scale dissipation processes.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer)
UniBasel Contributors:Meyer, Ernst
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Institute of Physics
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:11 Oct 2012 15:31
Deposited On:11 Oct 2012 15:21

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